Use this page to define a single cache that is controlled
by WebSphere® Application Server.
To view this administrative console page, click Servers >
Server Types > WebSphere application servers > server_name >
Container services > Dynamic cache service > External cache
groups > external_cache_group > External cache group
members > external_cache_group_member.
Enable and configure Fast resource cache adapter (FRCA).
Enable FRCA by selecting the check box. Complete the following
fields to configure FRCA:
- Cache size (required): Specifies the size of the FRCA cache.
The default value is 102400000 bytes. The maximum
size is limited by the amount of available CSM memory that is managed
by the IBM® z/OS Communications Server. The
value is rounded up to a 4K (4096) interval.
- Cache entries (required): Specifies the number of individual
objects that can be placed in the FRCA cache. The default value is
1000 entries. The maximum value is limited by the underlying support
in the z/OS Communication Server.
- Max entry size (required): Specifies the maximum size,
in bytes, of a single object that can be placed in the FRCA cache.
The default value is 1000000 bytes.
- Stack name: Specifies the name of the Unix System Services
physical file system that supports the TCP/IP stack containing the
FRCA cache. The stack name that is specified must match the name on
the SubFileSysType statement in the Unix System Services BPXPRMxx
parmlib member. There is no default value.
Important: This
directive is only needed if the Unix System Services
Common Inet function is being used. Determine if Common Inet
is in use, and if so, enter the name of the FRCA-enabled TCP/IP stack.
- Transaction class: Specifies the transaction class name
that is used to classify the work done by FRCA. The value is 8 characters
or less. If a transaction class is specified, the FRCA processing
is classified in Workload management (WLM). If a transaction class
is not specified, no classification occurs. There is no default value.
Create or edit the cachespec.xml file and use the
following example to specify that the HTTP request is externally cacheable
to the FRCA cache:
<property name="ExternalCache">afpa</property>